package droid.frame.utils.android;

import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;

/**
 * Intent相关操作的工具类
 * 
 * @author coffee<br>
 *         2015-12-11下午3:57:17
 */
public class IntentUtils {

	/**
	 * 选取相册中的图片、获取图片路径
	 * 
	 * @param context
	 * @param uri
	 * @return
	 */
	public String getPicturePath(final Context context, final Uri uri) {
		// DocumentProvider
		if (isDocumentUri(context, uri)) {
			return getKitkatPath(context, uri);
		}
		// MediaStore (and general)
		else if ("content".equalsIgnoreCase(uri.getScheme())) {
			// Return the remote address
			if (isGooglePhotosUri(uri)) {
				return uri.getLastPathSegment();
			}
			return getDataColumn(context, uri, null, null);
		}
		// File
		else if ("file".equalsIgnoreCase(uri.getScheme())) {
			return uri.getPath();
		}
		return null;
	}

	@TargetApi(Build.VERSION_CODES.KITKAT)
	private boolean isDocumentUri(final Context context, final Uri uri) {
		final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
		if (isKitKat) {
			return DocumentsContract.isDocumentUri(context, uri);
		}
		return false;
	}

	@TargetApi(Build.VERSION_CODES.KITKAT)
	private String getKitkatPath(final Context context, final Uri uri) {
		// ExternalStorageProvider
		if (isExternalStorageDocument(uri)) {
			final String docId = DocumentsContract.getDocumentId(uri);
			final String[] split = docId.split(":");
			final String type = split[0];

			if ("primary".equalsIgnoreCase(type)) {
				return Environment.getExternalStorageDirectory() + "/" + split[1];
			}
		}
		// DownloadsProvider
		else if (isDownloadsDocument(uri)) {

			final String id = DocumentsContract.getDocumentId(uri);
			final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

			return getDataColumn(context, contentUri, null, null);
		}
		// MediaProvider
		else if (isMediaDocument(uri)) {
			final String docId = DocumentsContract.getDocumentId(uri);
			final String[] split = docId.split(":");
			final String type = split[0];

			Uri contentUri = null;
			if ("image".equals(type)) {
				contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
			} else if ("video".equals(type)) {
				contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
			} else if ("audio".equals(type)) {
				contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
			}

			final String selection = "_id=?";
			final String[] selectionArgs = new String[] { split[1] };

			return getDataColumn(context, contentUri, selection, selectionArgs);
		}
		return null;
	}

	/**
	 * Get the value of the data column for this Uri. This is useful for MediaStore Uris, and other file-based ContentProviders.
	 * 
	 * @param context
	 *            The context.
	 * @param uri
	 *            The Uri to query.
	 * @param selection
	 *            (Optional) Filter used in the query.
	 * @param selectionArgs
	 *            (Optional) Selection arguments used in the query.
	 * @return The value of the _data column, which is typically a file path.
	 */
	public String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
		Cursor cursor = null;
		final String column = "_data";
		final String[] projection = { column };

		try {
			cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
			if (cursor != null && cursor.moveToFirst()) {
				final int index = cursor.getColumnIndexOrThrow(column);
				return cursor.getString(index);
			}
		} finally {
			if (cursor != null)
				cursor.close();
		}
		return null;
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is ExternalStorageProvider.
	 */
	public boolean isExternalStorageDocument(Uri uri) {
		return "com.android.externalstorage.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is DownloadsProvider.
	 */
	public boolean isDownloadsDocument(Uri uri) {
		return "com.android.providers.downloads.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is MediaProvider.
	 */
	public boolean isMediaDocument(Uri uri) {
		return "com.android.providers.media.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is Google Photos.
	 */
	public boolean isGooglePhotosUri(Uri uri) {
		return "com.google.android.apps.photos.content".equals(uri.getAuthority());
	}
}
